.header{
  background-color: #fff;
  height: 50PX;
  width: 100%;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  
  .iconfont{
    width: 1.2rem;
  }
  img{
    width: 5rem;
    height: 50%;
  }
}